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Soonchul, Choi
희귀 핵 연구단
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Constraints on Nuclear Saturation Properties from Terrestrial Experiments and Astrophysical Observations of Neutron Stars

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Title
Constraints on Nuclear Saturation Properties from Terrestrial Experiments and Astrophysical Observations of Neutron Stars
Author(s)
Soonchul Choi; Miyatsu, Tsuyoshi; Cheoun, Myung-Ki; Saito, Koichi
Publication Date
2021-03
Journal
ASTROPHYSICAL JOURNAL, v.909, no.2
Publisher
IOP PUBLISHING LTD
Abstract
Taking into account the terrestrial experiments and the recent astrophysical observations of neutron stars and gravitational-wave signals, we impose restrictions on the equation of state (EoS) for isospin-asymmetric nuclear matter. Using the relativistic mean-field model with SU(3) flavor symmetry, we investigate the impacts of effective nucleon mass, nuclear incompressibility, and slope parameter of nuclear symmetry energy on the nuclear and neutron star properties. It is found that the astrophysical information of massive neutron stars and tidal deformabilities, as well as the nuclear experimental data, plays an important role to restrict the EoS for neutron stars. In particular, the softness of the nuclear EoS due to the existence of hyperons in the core gives stringent constraints on those physical quantities. Furthermore, it is possible to put limits on the curvature parameter of nuclear symmetry energy by means of nuclear and astrophysical calculations.
URI
https://pr.ibs.re.kr/handle/8788114/10065
DOI
10.3847/1538-4357/abe3fe
ISSN
0004-637X
Appears in Collections:
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
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